Editor’s Note: This ordinance also repealed former Ch. 225, Stormwater Management, Art. I, Post-Construction Stormwater Management, adopted 5-12-2008. The Stormwater Reference Guide adopted by this ordinance is on file at the Town Hall and available at townofgreenville.com.

This article is adopted by the Town of Greenville Board under the
authority granted by § 60.627, Wis. Stats. This article
supersedes all provisions of an ordinance previously enacted under
§ 60.62, Wis. Stats., that relate to post-construction stormwater
management regulations. Except as otherwise specified in § 60.627,
Wis. Stats., § 60.62, Wis. Stats., applies to this article
and to any amendments to this article.

The Town Board finds that uncontrolled, post-construction runoff
has a significant impact upon water resources and the health, safety
and general welfare of the community and diminishes the public enjoyment
and use of natural resources. Specifically, uncontrolled post-construction
runoff can:

Diminish the capacity of lakes and streams to support fish, aquatic
life and recreational and water supply uses by increasing pollutant
loading of sediment, suspended solids, nutrients, heavy metals, bacteria,
pathogens and other urban pollutants.

Purpose. The general purpose of this article is to establish long-term,
post-construction runoff management requirements that will diminish
the threats to public health, safety, welfare and the aquatic environment.
Specific purposes are to:

Prevent and control the adverse effects of stormwater; prevent and
control soil erosion; prevent and control water pollution; protect
spawning grounds, fish and aquatic life; control building sites, placement
of structures and land uses; preserve ground cover and scenic beauty;
and promote sound economic growth.

Control exceedance of the safe capacity of existing drainage facilities
and receiving water bodies; prevent undue channel erosion; control
increases in the scouring and transportation of particulate matter;
and prevent conditions that endanger downstream property.

Intent. It is the intent of the Town Board that this article regulates
post-construction stormwater discharges to waters of the state. This
article may be applied on a site-by-site basis. The Town Board recognizes,
however, that the preferred method of achieving the stormwater performance
standards set forth in this article is through the preparation and
implementation of comprehensive, systems-level stormwater management
plans that cover hydrologic units, such as watersheds, on a municipal
and regional scale. Such plans may prescribe regional stormwater devices,
practices or systems, any of which may be designed to treat runoff
from more than one site prior to discharge to waters of the state.
Where such plans are in conformance with the performance standards
developed under § 281.16, Wis. Stats., for regional stormwater
management measures and have been approved by the Town Board, it is
the intent of this article that the approved plan be used to identify
post-construction management measures acceptable for the community.

Notwithstanding the applicability requirements in Subsection A(1), this article applies to post-construction sites of any size that, in the opinion of the administering authority, are likely to result in runoff that exceeds the safe capacity of the existing drainage facilities or receiving body of water, that cause undue channel erosion, that increase water pollution by scouring or the transportation of particulate matter or that endanger property or public safety.

Exclusions. This article is not applicable to activities conducted
by a state agency, as defined under § 227.01(1), Wis. Stats.,
but also including the office of District Attorney, which is subject
to the state plan promulgated or a memorandum of understanding entered
into under § 281.33(2), Wis. Stats.

Maintenance of sufficient vegetation types and densities
such that the physical integrity of the stream bank or lakeshore is
preserved. Self-sustaining vegetative cover includes grasses, forbs,
sedges and duff layers of fallen leaves and woody debris.

A governmental employee or their designees empowered under
§ 60.627, Wis. Stats., to administer this article. For the
purpose of this article, it is the Town of Greenville Public Works
Department under guidance from the Town Board.

The part of the farm where there is planting, growing, cultivating
and harvesting of crops for human or livestock consumption and pasturing
or outside yarding of livestock, including sod farms and silviculture.
Practices in this area may include waterways, drainage ditches, diversions,
terraces, farm lanes, excavation, filling and similar practices. The
agricultural activity area does not include the agricultural production
area.

The part of the farm where there is concentrated production
activity or impervious surfaces. Agricultural production areas include
buildings, driveways, parking areas, feed storage structures, manure
storage structures, and other impervious surfaces. The agricultural
production area does not include the agricultural activity area.

A typical calendar year of precipitation as determined by
the Wisconsin DNR for users of models such as SLAMM, P8, or equivalent
methodology. The average annual rainfall is chosen from a Wisconsin
DNR publication for the location closest to the municipality.

A development or sale where multiple separate and distinct
land-disturbing construction activities may be taking place at different
times on different schedules but under one plan. A common plan of
development or sale includes, but is not limited to, subdivision plats,
certified survey maps, and other developments.

Soil that has at least a three-foot-deep layer with at least
twenty-percent fines; or at least a five-foot-deep layer with at least
ten-percent fines; or an engineered soil with an equivalent level
of protection as determined by the administering authority for the
site.

That all land-disturbing construction activities at the construction
site have been completed and that a uniform, perennial, vegetative
cover has been established, with a density of at least 70% of the
cover, for the unpaved areas and areas not covered by permanent structures,
or that employ equivalent permanent stabilization measures.

A performance bond, maintenance bond, surety bond, irrevocable
letter of credit, or similar guarantees submitted to the administering
authority by the responsible party to assure that requirements of
the article are carried out in compliance with the stormwater management
plan.

Higher of either the elevation to which the soil is saturated
as observed as a free water surface in an unlined hole, or the elevation
to which the soil has been seasonally or periodically saturated as
indicated by soil color patterns throughout the soil profile, as defined
in Technical Standard 1002, Site Evaluation for Stormwater Infiltration.

An area that releases as runoff all or a large portion of
the precipitation that falls on it, except for frozen soil. Rooftops,
sidewalks, driveways, parking lots and streets are examples of surfaces
that typically are impervious. Gravel surfaces are considered impervious,
unless specifically designed to encourage infiltration.

An undeveloped area of land or new development area located
within an existing urban sewer service area, surrounded by development
or development and natural or man-made features where development
cannot occur. "Infill" does not include any undeveloped area that
was part of a larger new development for which a stormwater permit
in accordance with Subch. III of Ch. NR 216, Wis. Adm. Code, was required
to be submitted after October 1, 2004, to the Wisconsin Department
of Natural Resources or Wisconsin Department of Safety and Professional
Services (formerly the Department of Commerce).

A device or practice such as a basin, trench, rain garden
or swale designed specifically to encourage infiltration, but does
not include natural infiltration in pervious surfaces such as lawns,
the redirecting of rooftop downspouts onto lawns or minimal infiltration
from practices, such as swales or roadside channels designed for conveyance
and pollutant removal only.

Any man-made alteration of the land surface resulting in
a change in the topography or existing vegetative or nonvegetative
soil cover, that may result in runoff and lead to an increase in soil
erosion and movement of pollutants into the municipal separate storm
sewer or waters of the state. Land-disturbing construction activity
includes clearing and grubbing, demolition, excavating, pit trench
dewatering, filling and grading activities, and soil stockpiling.

The highest level of performance that is achievable but is
not equivalent to a performance standard identified within this article.
Maximum extent practicable applies when the permit applicant demonstrates
to the administering authority's satisfaction that a performance
standard is not achievable and that a lower level of performance is
appropriate. In making the assertion that a performance standard is
not achievable and that a level of performance different from the
performance standard is the maximum extent practicable, the permit
applicant shall take into account the best available technology, cost
effectiveness, geographic features, and other competing interests
such as protection of public safety and welfare, protection of endangered
and threatened resources, and preservation of historic properties.

Reconstruction of a highway that is limited to 1.5 miles
in continuous or aggregate total length of realignment and that does
not exceed 100 feet in width of roadbed widening and that does not
include replacement of a vegetated drainage system with a nonvegetated
drainage system except where necessary to convey runoff under a highway
or private road or driveway.

That portion of a post-construction site where impervious
surfaces are being created or expanded. Any disturbance where the
amount of impervious area for the post-development condition is greater
than the pre-development condition is classified as new development.
For purposes of this article, a post-construction site is classified
as new development, redevelopment, routine maintenance, or some combination
of these three classifications as appropriate.

An area that releases as runoff a small portion of the precipitation
that falls on it. Lawns, gardens, parks, forests or other similar
vegetated areas are examples of surfaces that typically are pervious.

The extent and distribution of land cover types present before
the initiation of land-disturbing construction activity, assuming
that all land uses prior to development activity are managed in an
environmentally sound manner.

That portion of a post-construction site where impervious
surfaces are being reconstructed, replaced, or reconfigured. Any disturbance
where the amount of impervious area for the post-development condition
is equal to or less than the pre-development condition is classified
as redevelopment. For purposes of this article, a post-construction
site is classified as new development, redevelopment, routine maintenance,
or some combination of these three classifications as appropriate.

That portion of a post-construction site where pre-development
impervious surfaces are being maintained to preserve the original
line and grade, hydraulic capacity, drainage pattern, configuration,
or purpose of the facility. Remodeling of buildings and resurfacing
of parking lots, streets, driveways, and sidewalks are examples of
routine maintenance, provided the lower 1/2 of the impervious surface's
granular base is not disturbed. The disturbance shall be classified
as redevelopment if the lower 1/2 of the granular base associated
with the pre-development impervious surface is disturbed or if the
soil located beneath the impervious surface is exposed. For purposes
of this article, a post-construction site is classified as new development,
redevelopment, routine maintenance, or some combination of these three
classifications as appropriate.

A conveyance or system of conveyances, including roads with
drainage systems, streets, catch basins, curbs, gutters, ditches,
constructed channels or storm drains, which meets all of the following
criteria:

Activities including tree nursery operations, tree harvesting
operations, reforestation, tree thinning, prescribed burning, and
pest and fire control. Clearing and grubbing of an area of a construction
site is not a silviculture activity.

A performance standard that will apply in a specific area,
where additional practices beyond those contained in this article,
are necessary to meet water quality standards. A total maximum daily
load is an example of a targeted performance standard.

An edge, or point on the landscape, landward from the ordinary
high-water mark of a surface water of the state, where the slope of
the land begins to be less than 12% continually for at least 50 feet.
If the slope of the land is 12% or less continually for the initial
50 feet, landward from the ordinary high-water mark, the top of the
channel is the ordinary high-water mark.

The amount of pollutants specified as a function of one or
more water quality parameters, that can be discharged per day into
a water quality limited segment and still ensure attainment of the
applicable water quality standard.

The United States Department of Agriculture, Natural Resources
Conservation Service (previously Soil Conservation Service), Urban
Hydrology for Small Watersheds, Second Edition, Technical Release
55, June 1986, which is incorporated by reference for this article.

A public street, a public road, a public highway, a railroad,
a public mass transit facility, a public-use airport, a public trail,
or any other public work for transportation purposes such as harbor
improvements under § 85.095(1)(b), Wis. Stats. "Transportation
facility" does not include building sites for the construction of
public buildings and buildings that are places of employment that
are regulated by the Wisconsin Department of Natural Resources pursuant
to § 281.33, Wis. Stats.

A rainfall type curve as established in the United States
Department of Agriculture, Soil Conservation Service, Technical Paper
149, published 1973, which is incorporated by reference for this article.
The Type II curve is applicable to all of Wisconsin and represents
the most intense storm pattern.

The following methods shall be used in designing and maintaining
the water quality, peak discharge, infiltration, protective area,
fueling/vehicle maintenance, and swale treatment components of stormwater
practices needed to meet the water quality standards of this article:

Where technical standards have not been identified or developed by
the Wisconsin Department of Natural Resources, other technical standards
may be used, provided that the methods have been approved by the administering
authority.

Plan. A written stormwater management plan shall be developed and implemented by the responsible party in accordance with § 255-9. The stormwater management plan shall meet all of the applicable requirements contained in this article.

Water quality. Best management practices shall be designed, installed
and maintained to control pollutants carried in runoff from the post-construction
site. The design shall be based on the average annual rainfall, as
compared to no runoff management controls.

For post-construction sites with less than one acre of land
disturbance, reduce the pollutant load using BMPs from the Town of
Greenville Stormwater Reference Guide[1] or other practices approved by the administering authority.

Sites, including common plan of development sites, with a cumulative addition of 5,000 square feet or greater of impervious surfaces after October 1, 2004, are required to satisfy the performance standards within § 255-7C(1)(a)[1] and [2].

When designing BMPs, runoff draining to the BMP from off-site areas shall be taken into account in determining the treatment efficiency of the practice. Any impact on the BMP efficiency shall be compensated for by increasing the size of the BMP accordingly. The pollutant load reduction provided by the BMP for an off-site area shall not be used to satisfy the required on-site pollutant load reduction, unless otherwise approved by the administering authority in accordance with § 255-7E.

If the design cannot meet the water quality performance standards of § 255-7C(1)(a) through (e), the stormwater management plan shall include a written, site-specific explanation of why the water quality performance standard cannot be met and why the pollutant load will be reduced only to the maximum extent practicable. Except as provided in § 255-7F, the administering authority may not require any person to exceed the applicable water quality performance standard to meet the requirements of maximum extent practicable.

The peak post-development discharge rate shall not exceed the
peak pre-development discharge rate for the one-year, two-year, ten-year,
and one-hundred-year, twenty-four-hour design storms. These peak discharge
requirements apply to new development and redevelopment areas. No
peak discharge control is required for routine maintenance areas,
unless runoff from the routine maintenance area discharges into a
proposed peak flow control facility.

Peak discharge calculations shall use TR-55 methodology. Atlas
14 rainfall depths and the MSE4 rainfall distribution shall be used
unless the site is to be served by a previously constructed peak discharge
facility. At the permittee's discretion, the TP-40 rainfall depths
and the Type II rainfall distribution can be used for sites that are
to be served by a previously constructed peak discharge facility.
The meaning of "hydrologic soil group" and "runoff curve number" are
as determined in TR-55. Unless the site is currently woodland, peak
pre-development discharge rates shall be determined using the following
runoff curve numbers for a "meadow" vegetative cover:

For post-construction sites with less than 5,000 square feet
of impervious surface disturbance, prepare a plan that shows how the
peak post-development discharge rates are reduced using BMPs from
the Town of Greenville Stormwater Reference Guide or other practices
approved by the administering authority.[2] If 90% of the proposed impervious surfaces discharge to
BMPs, these sites are not required to satisfy a numeric performance
standard.

When designing BMPs, runoff draining to the BMP from off-site areas shall be taken into account in determining the performance of the practice. Any impact on the BMP performance shall be compensated for by increasing the size of the BMP accordingly. The peak discharge reduction provided by the BMP for an off-site area shall not be used to satisfy the required on-site peak discharge reduction, unless otherwise approved by the administering authority in accordance with § 255-7E.

Discharge to the municipal separate storm sewer system, waters
of the state, or an appropriate drainage easement. If a site is not
able to meet this requirement, the adequate outfall may be permitted
if it diffuses the outfall within the site boundary in accordance
with the Town of Greenville Stormwater Reference Guide.

New buildings with basements shall be designed to provide a
minimum one foot of vertical separation between the lowest floor surface
and the estimated high groundwater level. If less than one foot of
vertical separation is provided, groundwater flow shall be estimated
for each basement during site or subdivision design. In addition,
the on-site stormwater systems shall be designed to accommodate the
additional water flow and volume from groundwater.

New development sites located near a closed depression and/or
flood-prone area shall be designed to provide a minimum one foot of
vertical separation between the lowest ground surface elevation at
the building's perimeter and the overland relief elevation for
the flood-prone area. The Town of Greenville maintains a Flood-Prone
Area Map to assist with identifying higher risk areas. If less than
one foot of vertical separation is provided, a detailed stormwater
analysis shall be performed to identify and reasonably manage one-hundred-year
flooding risks for buildings or structures located within the flood-prone
area. Overland flow paths for the one-hundred-year, twenty-four-hour
design rainfall event shall be identified for existing and proposed
depressions. The minimum finished ground elevation at a building's
perimeter shall be a minimum one foot above the depression's
one-hundred-year, twenty-four-hour water surface elevation. The minimum
finished ground elevation at a building's perimeter shall be
depicted on the site's grading or drainage plan.

Low imperviousness. For development up to forty-percent connected
imperviousness, such as parks, cemeteries, and low-density residential
development, infiltrate sufficient runoff volume so that the post-development
infiltration volume shall be at least 90% of the pre-development infiltration
volume, based on an average annual rainfall. However, when designing
appropriate infiltration systems to meet this requirement, no more
than 1% of the post-construction site is required as an effective
infiltration area.

Moderate imperviousness. For development with more than forty-percent
and up to eighty-percent connected imperviousness, such as medium-
and high-density residential, multifamily development, industrial
and institutional development, and office parks, infiltrate sufficient
runoff volume so that the post-development infiltration volume shall
be at least 75% of the pre-development infiltration volume, based
on an average annual rainfall. However, when designing appropriate
infiltration systems to meet this requirement, no more than 2% of
the post-construction site is required as an effective infiltration
area.

High imperviousness. For development with more than eighty-percent
connected imperviousness, such as commercial strip malls, shopping
centers, and commercial downtowns, infiltrate sufficient runoff volume
so that the post-development infiltration volume shall be at least
60% of the pre-development infiltration volume, based on an average
annual rainfall. However, when designing appropriate infiltration
systems to meet this requirement, no more than 2% of the post-construction
site is required as an effective infiltration area.

The pre-development condition shall assume "good hydrologic
conditions" for appropriate land covers as identified in TR-55 or
an equivalent methodology approved by the administering authority.
The meaning of "hydrologic soil group" and "runoff curve number" are
as determined in TR-55. The actual pre-development vegetative cover
and the following pre-development runoff curve numbers shall be used:

For post-construction sites with less than 20,000 square feet
of new impervious surfaces, infiltrate runoff volume using BMPs from
the Town of Greenville Stormwater Reference Guide or other practices
approved by the administering authority. These sites are not required
to satisfy a numeric performance standard.

When designing BMPs, runoff draining to the BMP from off-site areas shall be taken into account in determining the performance of the practice. Any impact on the BMP performance shall be compensated for by increasing the size of the BMP accordingly. The runoff volume reduction provided by the BMP for an off-site area shall not be used to satisfy the required on-site runoff volume reduction, unless otherwise approved by the administering authority in accordance with § 255-7E.

Pretreatment. Before infiltrating runoff, pretreatment shall be required for parking lot runoff and for runoff from road construction in commercial, industrial and institutional areas that will enter an infiltration system. The pretreatment shall be designed to protect the infiltration system from clogging prior to scheduled maintenance and to protect groundwater quality in accordance with § 255-7C(3)(o). Pretreatment options may include, but are not limited to, oil/grease separation, sedimentation, biofiltration, filtration, swales or filter strips.

Source area prohibitions. Runoff from the following areas may not be infiltrated and may not qualify as contributing to meeting the requirements of § 255-7C(3) unless demonstrated to meet the conditions of § 255-7C(3)(o):

Areas associated with a Tier 1 industrial facility identified
in § NR 216.21(2)(a), Wis. Adm. Code, including storage,
loading, and parking. Rooftops may be infiltrated with the concurrence
of the administering authority.

Areas within 400 feet of a community water system well as specified
in § NR 811.16(4), Wis. Adm. Code, or within the separation
distances listed in § NR 812.08, Wis. Adm. Code, for any
private well or noncommunity well for runoff infiltrated from commercial,
including multifamily residential, industrial, and institutional land
uses or regional devices for one- and two-family residential development.

Infiltration practices shall be located so that the characteristics
of the soil and the separation distance between the bottom of the
infiltration system and the elevation of seasonal high groundwater
or the top of bedrock are in accordance with the following:

Infiltration rate exemptions. Infiltration practices located
in the following areas may be credited toward meeting the requirement
under the following conditions, but the decision to infiltrate under
these conditions is optional:

Where the least permeable soil horizon to five feet below the
proposed bottom of the infiltration system using the U.S. Department
of Agriculture method of soils analysis is one of the following: sandy
clay loam, clay loam, silty clay loam, sandy clay, silty clay, or
clay.

Alternate uses. Where alternate uses of runoff are employed, such as for toilet flushing, laundry or irrigation or storage on green roofs where an equivalent portion of the runoff is captured permanently by rooftop vegetation, such alternate use shall be given equal credit toward the infiltration volume required by § 255-7C(3).

Infiltration systems designed in accordance with this § 255-7C(3) shall, to the extent technically and economically feasible, minimize the level of pollutants infiltrating to groundwater and shall maintain compliance with the preventive action limit at a point of standards application in accordance with Ch. NR 140, Wis. Adm. Code. However, if site-specific information indicates that compliance with a preventive action limit is not achievable, the infiltration BMP may not be installed or shall be modified to prevent infiltration to the maximum extent practicable.

"Protective area" means an area of land that commences at the top of the channel of lakes, streams and rivers, or at the delineated boundary of wetlands, and that is the greatest of the following widths, as measured horizontally from the top of the channel or delineated wetland boundary to the closest impervious surface. However, in § 255-7C(4), "protective area" does not include any area of land adjacent to any stream enclosed within a pipe or culvert, such that runoff cannot enter the enclosure at this location.

For less susceptible wetlands, 10% of the average wetland width,
but no less than 10 feet nor more than 30 feet. Less susceptible wetlands
include degraded wetlands dominated by invasive species such as reed
canary grass; cultivated hydric soils; and any gravel pits, or dredged
material or fill material disposal sites that take on the attributes
of a wetland.

In § 255-7C(4)(a)[4] to [6], determinations of the extent of the protective area adjacent to wetlands shall be made on the basis of the sensitivity and runoff susceptibility of the wetland in accordance with the standards and criteria in § NR 103.03, Wis. Adm. Code.

Wetlands shall be delineated. Wetland boundary delineations shall be made in accordance with § NR 103.08(1m), Wis. Adm. Code. Section 255-7C(4) does not apply to wetlands that have been completely filled in compliance with all applicable state and federal regulations. The protective area for wetlands that have been partially filled in compliance with all applicable state and federal regulations shall be measured from the wetland boundary delineation after fill has been placed. Where there is a legally authorized wetland fill, the protective area standard need not be met in that location.

Impervious surfaces shall be kept out of the protective area
entirely or to the maximum extent practicable. If there is no practical
alternative to locating an impervious surface in the protective area,
the stormwater management plan shall contain a written, site-specific
explanation.

Where land-disturbing construction activity occurs within a
protective area, adequate sod or self-sustaining vegetative cover
of 70% or greater shall be established and maintained where no impervious
surface is present. The adequate sod or self-sustaining vegetative
cover shall be sufficient to provide for bank stability, maintenance
of fish habitat, and filtering of pollutants from upslope overland
flow areas under sheet flow conditions. Nonvegetative materials, such
as rock riprap, may be employed on the bank as necessary to prevent
erosion, such as on steep slopes or where high-velocity flows occur.

Areas of post-construction sites from which the runoff does not enter the surface water, including wetlands, without first being treated by a BMP to meet the requirements of § 255-7C(1) and (2), except to the extent that vegetative ground cover is necessary to maintain bank stability.

Fueling and vehicle maintenance areas. Fueling and vehicle maintenance
areas shall have BMPs designed, installed and maintained to reduce
petroleum within runoff, so that the runoff that enters waters of
the state contains no visible petroleum sheen, or to the maximum extent
practicable.

Requirement. Except as provided in § 255-7C(6)(b), transportation facilities that use swales for runoff conveyance and pollutant removal are exempt from the requirements of § 255-7C(1), (2), and (3), if the swales are designed to do all of the following or to the maximum extent practicable:

Other requirements. Notwithstanding § 255-7C(6)(a), the administering authority may, consistent with water quality standards, require that other requirements, in addition to swale treatment, be met on a transportation facility with an average daily traffic rate greater than 2,500 and where the initial surface water of the state that the runoff directly enters is any of the following:

Underground utility construction such as water, sewer, gas,
electric, telephone, cable television, and fiber optic lines. This
exemption does not apply to the construction of any aboveground structures
associated with utility construction.

A transportation facility post-construction site with less than ten-percent connected imperviousness, based on the area of land disturbance, provided that the cumulative area of all impervious surfaces is less than one acre. Notwithstanding this exemption, the protective area requirements of § 255-7C(4) still apply.

Routine maintenance for transportation facilities that have
less than five acres of land disturbance if performed to maintain
the original line and grade, hydraulic capacity or original purpose
of the facility.

Natural topography and land cover features, such as natural swales,
natural depressions, native soil infiltrating capacity, and natural
groundwater recharge areas, shall be preserved and used, to the extent
possible, to meet the requirements of this section.

Emergency overland flow for all stormwater facilities shall be provided
to prevent exceeding the safe capacity of downstream drainage facilities
and prevent endangerment of downstream property or public safety.

The amount of credit that the administering authority may give an off-site or regional BMP for purposes of determining compliance with the performance standards of § 255-7C is limited to the treatment capability or performance of the BMP.

The BMP shall be designed and adequately sized to provide a level of stormwater control equal to or greater than that which would be afforded by on-site BMPs meeting the § 255-7C performance standards.

The owner of the BMP has entered into a § 255-10 maintenance agreement with the Town of Greenville, or another municipal entity, such that the BMP has a legally obligated entity responsible for its long-term operation and maintenance. Legal authority exists if a municipality owns, operates and maintains the BMP.

Where an off-site or regional BMP option exists such that the
administering authority exempts the applicant from all or part of
the minimum on-site stormwater management requirements, the applicant
shall be required to pay a fee in an amount determined in negotiation
with the administering authority. In determining the fee for post-construction
runoff, the administering authority shall consider an equitable distribution
of the cost for land, engineering design, construction, and maintenance
of the off-site or regional BMP.

Best management practice in nonnavigable waters. For purposes of determining compliance with the performance standards of § 255-7C, the administering authority may give credit for BMPs that function to provide treatment for runoff from existing development and post-construction runoff from new development, redevelopment, and routine maintenance areas and that are located within nonnavigable waters.

New development runoff. Except as allowed under § 255-7E(4)(b), BMPs designed to treat post-construction runoff from new development areas may not be located in navigable waters, and for purposes of determining compliance with the performance standards of § 255-7C, the administering authority may not give credit for such BMPs.

New development runoff exemption. Best management practices to treat post-construction runoff from new development areas may be located within navigable waters and may be creditable by the administering authority under § 255-7C, if all the following are met:

Existing development and post-construction runoff from redevelopment, routine maintenance, and infill development areas. Except as provided in § 255-7E(4)(d), BMPs designed to treat post-construction runoff for existing development and post-construction runoff from redevelopment, routine maintenance and infill development areas may not be located in navigable waters, and for purposes of determining compliance with the performance standards of § 255-7C, the administering authority may not give credit for such BMPs.

Existing development and post-construction runoff from redevelopment, routine maintenance, and infill development areas exemption. Best management practices that function to provide treatment of runoff from existing development and post-construction runoff from redevelopment, routine maintenance and infill development areas may be located within navigable waters, and for purposes of determining compliance with the performance standards of § 255-7C, the administering authority may give credit for such BMPs, if any of the following are met:

Water quality trading. To comply with § 255-7C(1) performance standards, the administering authority may authorize credit for water quality trading, provided that all of the following conditions are satisfied:

Targeted performance standards. The administering authority may establish numeric water quality requirements that are more stringent than those set forth in § 255-7C in order to meet targeted performance standards, total maximum daily loads, and/or water quality standards for a specific water body or area. The numeric water quality requirements may be applicable to any permitted site, regardless of the size of land-disturbing construction activity.

Alternate requirements. The administering authority may establish
stormwater management requirements more stringent than those set forth
in this section if the administering authority determines that an
added level of protection is needed to protect sensitive resources.
Also, the administering authority may establish stormwater management
requirements less stringent than those set forth in this section if
the administering authority determines that less protection is needed
to protect sensitive resources and provide reasonable flood protection.
However, the alternative requirements shall not be less stringent
than those requirements promulgated in rules by Wisconsin Department
of Natural Resources under Ch. NR 151, Wis. Adm. Code. The established
additional requirements shall be provided to the applicant in writing.

Permit required. No responsible party may undertake a land-disturbing
construction activity without receiving a post-construction runoff
permit from the administering authority prior to commencing the proposed
activity.

Permit application and fees. Unless specifically excluded by this
article, any responsible party desiring a permit shall submit to the
administering authority a permit application made on a form provided
by the administering authority for that purpose.

The stormwater management plan shall be prepared to meet the requirements of § 255-7 and § 255-9, the maintenance agreement shall be prepared to meet the requirements of § 255-10, the financial guarantee shall meet the requirements of § 255-11, and fees shall be those established by the Town Board as set forth in § 255-12.

Review and approval of permit application. The administering authority
shall review any permit application that is submitted with a stormwater
management plan, maintenance agreement, and the required fee. The
following approval procedure shall be used:

Within 20 business days of the receipt of a complete permit application, including all items as required by § 255-8B, the administering authority shall inform the applicant whether the application, plan and maintenance agreement are approved or disapproved based on the requirements of this article.

If the stormwater permit application, plan and maintenance agreement are approved or if an agreed upon payment of fees in lieu of stormwater management practices is made pursuant to § 255-7E, the administering authority shall issue the permit.

The administering authority may request additional information from
the applicant. If additional information is submitted, the administering
authority shall have 20 business days from the date the additional
information is received to inform the applicant that the plan and
maintenance agreement are either approved or disapproved.

Failure by the administering authority to inform the permit applicant
of a decision within 20 business days of a required submittal shall
be deemed to mean approval of the submittal, and the applicant may
proceed as if a permit had been issued.

Permit requirements. All permits issued under this article shall be subject to the following conditions, and holders of permits issued under this article shall be deemed to have accepted these conditions. The administering authority may suspend or revoke a permit for violation of a permit condition, following written notification of the responsible party. An action by the administering authority to suspend or revoke this permit may be appealed in accordance with § 255-14.

The responsible party shall notify the administering authority at least 10 business days before commencing any work in conjunction with the stormwater management plan and within 10 business days upon completion of the stormwater management practices. If required as a special condition under § 255-8E, the responsible party shall make additional notification according to a schedule set forth by the administering authority so that practice installations can be inspected during construction.

Practice installations required as part of this article shall be
certified "as built" by a licensed professional engineer. Completed
stormwater management practices must pass a final inspection by the
administering authority or its designee to determine if they are in
accordance with the approved stormwater management plan and article.
The administering authority or its designee shall notify the responsible
party in writing of any changes required in such practices to bring
them into compliance with the conditions of this permit.

The responsible party shall notify the administering authority of
any significant modifications it intends to make to an approved stormwater
management plan. The administering authority may require that the
proposed modifications be submitted to it for approval prior to incorporation
into the stormwater management plan and execution by the responsible
party.

The responsible party shall inspect BMPs annually and after runoff
events in accordance with the stormwater management plan and maintenance
agreement. The responsible party shall have a licensed professional
submit a stamped written inspection report to the administering authority
for review and approval every five years. All written inspection reports
prepared by the responsible party shall accompany the stamped report
prepared by the licensed professional.

The responsible party shall maintain all stormwater management practices
in accordance with the stormwater management plan until the practices
either become the responsibility of the Town of Greenville or are
transferred to subsequent private owners as specified in the approved
maintenance agreement.

The responsible party authorizes the administering authority to perform any work or operations necessary to bring stormwater management measures into conformance with the approved stormwater management plan and consents to a special assessment or charge against the property as authorized under Subch. VII of Ch. 66, Wis. Stats., or to charging such costs against the financial guarantee posted under § 255-11.

If so directed by the administering authority, the responsible party
shall repair at the responsible party's own expense all damage
to adjoining municipal facilities and drainageways caused by runoff,
where such damage is caused by activities that are not in compliance
with the approved stormwater management plan.

The responsible party shall permit property access to the administering
authority or its designee for the purpose of inspecting the property
for compliance with the approved stormwater management plan and this
permit.

Where site development or redevelopment involves changes in
direction, increases in peak rate and/or total volume of runoff from
a site, the administering authority may require the responsible party
to make appropriate legal arrangements with affected property owners
concerning the prevention of endangerment to property or public safety.

Permit conditions. Permits issued under this subsection may include conditions established by administering authority in addition to the requirements needed to meet the performance standards in § 255-7 or a financial guarantee as provided for in § 255-11.

Permit duration. Permits issued under this section shall be valid from the date of issuance through the date the administering authority notifies the responsible party that all stormwater management practices have passed the final inspection required under § 255-8D(4).

Alternate requirements. The administering authority may prescribe alternative requirements for applicants seeking an exemption to on-site stormwater management performance standards under § 255-7E or for applicants seeking a permit for a post-construction site with less than 20,000 square feet of impervious surface disturbance.

Plan requirements. The stormwater management plan required under § 255-7B and § 255-8B shall comply with the Town of Greenville Stormwater Reference Guide[1] and contain at a minimum the following information:

Alternate requirements. The administering authority may prescribe alternative submittal requirements for applicants seeking an exemption to on-site stormwater management performance standards under § 255-7E or for applicants seeking a permit for a post-construction site with less than 20,000 square feet of impervious surface disturbance.

Maintenance agreement required. The maintenance agreement required under § 255-8B for stormwater management practices shall be an agreement between the Town of Greenville and the responsible party to provide for maintenance of stormwater practices beyond the duration period of this permit. The maintenance agreement shall be filed with the County Register of Deeds as a property deed restriction so that it is binding upon all subsequent owners of the land served by the stormwater management practices.

Identification of the responsible party(s), organization or city, county, town or village responsible for long-term maintenance of the stormwater management practices identified in the stormwater management plan required under § 255-8B.

Authorization for the administering authority to access the property
to conduct inspections of stormwater management practices as necessary
to ascertain that the practices are being maintained and operated
in accordance with the agreement.

A requirement on the administering authority to maintain public records
of the results of the site inspections, to inform the responsible
party responsible for maintenance of the inspection results, and to
specifically indicate any corrective actions required to bring the
stormwater management practice into proper working condition.

Agreement that the party designated under § 255-10B(3), as responsible for long-term maintenance of the stormwater management practices, shall be notified by the administering authority of maintenance problems which require correction. The specified corrective actions shall be undertaken within a reasonable time frame as set by the administering authority.

Authorization of the administering authority to perform the corrected actions identified in the inspection report if the responsible party designated under § 255-10B(3) does not make the required corrections in the specified time period. The administering authority shall enter the amount due on the tax rolls and collect the money as a special charge against the property pursuant to Subch. VII of Ch. 66, Wis. Stats.

Alternate requirements. The administering authority may prescribe alternative requirements for applicants seeking an exemption to on-site stormwater management performance standards under § 255-7E or for applicants seeking a permit for a post-construction site with less than 20,000 square feet of impervious surface disturbance.

Establishment of the guarantee. The administering authority may require
the submittal of a financial guarantee, the form and type of which
shall be acceptable to the administering authority. The financial
guarantee shall be in an amount determined by the administering authority
to be the estimated cost of construction and the estimated cost of
maintenance of the stormwater management practices during the period
which the designated party in the maintenance agreement has maintenance
responsibility. The financial guarantee shall give the administering
authority the authorization to use the funds to complete the stormwater
management practices if the responsible party defaults or does not
properly implement the approved stormwater management plan, upon written
notice to the responsible party by the administering authority that
the requirements of this article have not been met.

The administering authority shall release the portion of the financial
guarantee established under this section, less any costs incurred
by the administering authority to complete installation of practices,
upon submission of "as built plans" by a licensed professional engineer.
The administering authority may make provisions for a partial pro
rata release of the financial guarantee based on the completion of
various development stages.

The administering authority shall release the portion of the financial
guarantee established under this section to assure maintenance of
stormwater practices, less any costs incurred by the administering
authority, at such time that the responsibility for practice maintenance
is passed on to another entity via an approved maintenance agreement.

Alternate requirements. The administering authority may prescribe alternative requirements for applicants seeking an exemption to on-site stormwater management performance standards under § 255-7E or for applicants seeking a permit for a post-construction site with less than 20,000 square feet of impervious surface disturbance.

The fees referred to in other sections of this article shall
be established by the Town Board and may from time to time be modified
by resolution. A schedule of the fees established by the Town Board
shall be available for review in the Town Hall.

Any land-disturbing construction activity or post-construction runoff
initiated after the effective date of this article by any person,
firm, association, or corporation subject to the article provisions
shall be deemed a violation unless conducted in accordance with the
requirements of this article.

The administering authority shall notify the responsible party by
certified mail of any noncomplying land-disturbing construction activity
or post-construction runoff. The notice shall describe the nature
of the violation, remedial actions needed, a schedule for remedial
action, and additional enforcement action which may be taken.

Upon receipt of written notification from the administering authority under Subsection B, the responsible party shall correct work that does not comply with the stormwater management plan or other provisions of this permit. The responsible party shall make corrections as necessary to meet the specifications and schedule set forth by the administering authority in the notice.

If the violations to a permit issued pursuant to this article are
likely to result in damage to properties, public facilities, or waters
of the state, the administering authority may enter the land and take
emergency actions necessary to prevent such damage. The costs incurred
by the administering authority plus interest and legal costs shall
be billed to the responsible party.

The administering authority is authorized to post a stop-work order
on all land-disturbing construction activity that is in violation
of this article or to request the Town Attorney to obtain a cease-and-desist
order in any court with jurisdiction.

The administering authority is authorized to refer any violation
of this article, or of a stop-work order or cease-and-desist order
issued pursuant to this article, to the Town Attorney for the commencement
of further legal proceedings in any court with jurisdiction.

Any person, firm, association, or corporation which does not comply
with the provisions of this article shall be subject to a forfeiture
amount set from time to time by ordinance in the Fine and Forfeiture
Schedule of the Town of Greenville. Each calendar day the violation
exists shall be deemed a separate offense.

Compliance with the provisions of this article may also be enforced
by injunction in any court with jurisdiction. It shall not be necessary
to prosecute for forfeiture or a cease-and-desist order before resorting
to injunctional proceedings.

When the administering authority determines that the holder of a permit issued pursuant to this article has failed to follow practices set forth in the stormwater management plan or has failed to comply with schedules set forth in said stormwater management plan, the administering authority or a party designated by the administering authority may enter upon the land and perform the work or other operations necessary to bring the condition of said lands into conformance with requirements of the approved plan. The administering authority shall keep a detailed accounting of the costs and expenses of performing this work. These costs and expenses shall be deducted from any financial security posted pursuant to § 255-11 of this article. Where such a security has not been established or where such a security is insufficient to cover these costs, the costs and expenses shall be entered on the tax roll as a special charge against the property and collected with any other taxes levied thereon.

Board of Appeals. The Board of Appeals, created pursuant to Article XXXIII of Chapter 320 and pursuant to § 60.65, Wis. Stats, shall hear and decide appeals where it is alleged that there is error in any order, decision or determination made by the administering authority in administering this article. The Board shall also use the rules, procedures, duties, and powers authorized by statute in hearing and deciding appeals. Upon appeal, the Board may authorize variances from the provisions of this article that are not contrary to the public interest and where owing to special conditions a literal enforcement of the article will result in unnecessary hardship.

Who may appeal. Appeals to the Board of Appeals may be taken by any
aggrieved person or by an officer, department, board, or bureau of
the Town of Greenville affected by any decision of the administering
authority.

In any particular case where the landowner can show that, by
reason of exceptional topography or other physical condition, strict
compliance with any requirement of this article would cause unnecessary
hardship, the Board of Appeals may grant a variance, provided that
such relief may be granted without detriment to the public good and
without impairing the intent and purpose of this article or the desirable
general development of the Town. No variance shall be granted by the
Board which is contrary to provisions of the Wisconsin Administrative
Code or the Wisconsin Statutes.

If any section, clause, provision or portion of this article
is judged unconstitutional or invalid by a court of competent jurisdiction,
the remainder of the article shall remain in force and not be affected
by such judgment.

Nothing in this article creates or imposes, nor shall be construed
to create or impose, any greater obligation or responsibility on the
municipality which has adopted this article than those minimum requirements
specifically required by State of Wisconsin Statutes and Department
of Natural Resources regulations.

This article shall be in force and effect from and after its
adoption and publication. The above and foregoing article was duly
adopted by the Town Board of the Town of Greenville on the 27th day
of March 2017.

The purpose of this article is to provide for the health, safety,
environment and general welfare of the citizens of Town of Greenville
through the regulation of nonstormwater discharges into waters of
the state or the municipal separate storm sewer system (MS4) to the
maximum extent practicable as required by federal and state law. This
article establishes methods for controlling the introduction of pollutants
into waters of the state or the MS4 in order to comply with requirements
of the Wisconsin Pollutant Discharge Elimination System (WPDES) permit
process. The objectives of this article are:

Any material, including any substance, waste, or combination
thereof, which because of its quantity, concentration, or physical,
chemical, or infectious characteristics may cause, or significantly
contribute to, a substantial present or potential hazard to human
health, safety, property, or the environment when improperly treated,
stored, transported, disposed of, or otherwise managed.

Any drain or conveyance, whether on the surface or subsurface,
that allows an illicit discharge to enter waters of the state or the
MS4, including but not limited to any conveyances that allow any nonstormwater
discharge including sewage, process wastewater, and wash water to
enter waters of the state or the MS4 and any connections to waters
of the state or the MS4 from indoor drains and sinks, regardless of
whether said drain or connection had been previously allowed, permitted,
or approved by an authorized enforcement agency; or

Any drain or conveyance connected from a commercial or industrial
land use to waters of the state or the MS4 which has not been documented
in plans, maps, or equivalent records and approved by an authorized
enforcement agency.

Any discharge into waters of the state or a municipal separate
storm sewer system that is not composed entirely of stormwater. Nonstormwater
discharges that are not considered illicit discharges include water
line flushing, landscape irrigation, diverted stream flows, uncontaminated
groundwater infiltration, uncontaminated pumped groundwater, discharges
from potable water sources, foundation drains, air-conditioning condensation,
irrigation water, lawn watering, individual residential car washing,
flows from riparian habitats and wetlands, firefighting, and discharges
authorized under a WPDES permit unless identified by the Public Works
Department as a significant source of pollutants to waters of the
state.

A level of implementing management practices in order to
achieve a performance standard or other goal which takes into account
the best available technology, cost-effectiveness and other competing
issues such as human safety and welfare, endangered and threatened
resources, historic properties and geographic features.

As defined in Wisconsin Administrative Code Ch. NR 216, means
a conveyance or system of conveyances including roads with drainage
systems, municipal streets, catch basins, curbs, gutters, ditches,
constructed channels or storm drains, which meets all the following
criteria:

Any city, Town, village, county, county utility district,
Town sanitary district, Town utility district, school district or
metropolitan sewage district or any other public entity created pursuant
to law and having authority to collect, treat or dispose of sewage,
industrial wastes, stormwater or other wastes.

A document which describes the best management practices
and activities to be implemented by a person or business to identify
sources of pollution or contamination at a site and the actions to
eliminate or reduce pollutant discharges to waters of the state or
the MS4 to the maximum extent practicable.

A natural or artificial channel through which water flows.
These channels include: all blue and dashed blue lines on the USGS
quadrangle maps, all channels shown on the soils maps in the NRCS
soils book for Outagamie County, all channels identified on the site,
and new channels that are created as part of a development. The term
"watercourse" includes waters of the state as herein defined.

As defined in Ch. 283, Wis. Stats., means those portions
of Lake Michigan and Lake Superior within the boundaries of Wisconsin,
all lakes, bays, rivers, streams, springs, ponds, wells, impounding
reservoirs, marshes, watercourses, drainage systems and other surface
water or groundwater, natural or artificial, public or private, within
the state or under its jurisdiction, except those waters which are
entirely confined and retained completely upon the property of a person.

The Public Works Department shall administer, implement, and
enforce the provisions of this article. Any powers granted or duties
imposed upon the Public Works Department may be delegated in writing
by the Director of the Public Works Department to persons or entities
acting in the beneficial interest of or in the employ of the authorized
enforcement agency.

This article is not intended to modify or repeal any other ordinance,
rule, regulation, or other provision of law. The requirements of this
article are in addition to the requirements of any other ordinance,
rule, regulation, or other provision of law, and where any provision
of this article imposes restrictions different from those imposed
by any other ordinance, rule, regulation, or other provision of law,
whichever provision is more restrictive or imposes higher protective
standards for human health or the environment shall control.

The standards set forth herein and promulgated pursuant to this
article are minimum standards; therefore, this article does not intend
or imply that compliance by any person will ensure that there will
be no contamination, pollution, or unauthorized discharge of pollutants.

Prohibition of illicit discharges. No person shall throw, dump, spill,
drain, or otherwise discharge, cause, or allow others under its control
to throw, dump, spill, drain, or otherwise discharge into waters of
the state or the MS4 any pollutants or waters containing any pollutants,
other than stormwater.

Discharges associated with dye testing; however, this activity requires
a verbal notification to the Public Works Department and the Department
of Natural Resources a minimum of one business day prior to the time
of the test.

Any nonstormwater discharges permitted under a construction activity
permit, industrial activity permit, or WPDES permit shall comply with
all provisions of such permit. Proof of compliance with said permit
may be required in a form acceptable to the Public Works Department
prior to allowing discharges to waters of the state or the MS4.

This prohibition expressly includes, without limitation, illicit
connections made in the past, regardless of whether the connection
was permissible under law or practices applicable or prevailing at
the time of connection.

Improper connections in violation of this article must be disconnected
and redirected, if necessary, to an approved on-site wastewater management
system or the sanitary sewer system upon approval of the Public Works
Department.

Any drain or conveyance that has not been documented in plans, maps
or equivalent, and which may be connected to waters of the state or
the MS4, shall be located by the owner or occupant of that property
upon receipt of written notice of violation from the Public Works
Department requiring that such locating be completed. Such notice
will specify a reasonable time period within which the location of
the drain or conveyance is to be determined, that the drain or conveyance
be identified as storm sewer, sanitary sewer or other, and that the
outfall location or point of connection to the storm sewer system,
sanitary sewer system or other discharge point be identified. Results
of these investigations are to be documented and provided to the Public
Works Department.

Every person owning property through which a watercourse passes,
or such person's lessee, shall keep and maintain that part of
the watercourse within the property free of soil erosion, trash, debris,
and other obstacles that would pollute, contaminate, or significantly
retard the flow of water through the watercourse. In addition, the
owner or lessee shall maintain existing privately owned structures
within or adjacent to a watercourse, so that such structures will
not become a hazard to the use, function, or physical integrity of
the watercourse.

Right of entry; inspecting and sampling. The Public Works Department
shall be permitted to enter and inspect properties and facilities
subject to regulation under this article as often as may be necessary
to determine compliance with this article.

If a property or facility has security measures in force which require
proper identification and clearance before entry into its premises,
the owner or operator shall make the necessary arrangements to allow
access to representatives of the Public Works Department.

The Public Works Department shall have the right to set up on any
property or facility such devices as are necessary in the opinion
of the Public Works Department to conduct monitoring and/or sampling
of the facility's stormwater discharge.

The Public Works Department has the right to require the owner or
operator to install monitoring equipment as necessary, and make the
monitoring data available to the Public Works Department. The facility's
sampling and monitoring equipment shall be maintained at all times
in a safe and proper operating condition by the discharger at its
own expense. All devices used to measure stormwater flow and quality
shall be calibrated to ensure their accuracy.

Any temporary or permanent obstruction to safe and easy access to
the property or facility to be inspected and/or sampled shall be promptly
removed by the owner or operator at the written or oral request of
the Public Works Department and shall not be replaced. The costs of
clearing such access shall be borne by the owner or operator.

Unreasonable delays in allowing the Public Works Department access
to a facility is a violation of this article. A person who is the
operator of a facility commits an offense if the person denies the
Public Works Department reasonable access to the facility for the
purpose of conducting any activity authorized or required by this
article.

Special inspection warrant. If the Public Works Department has been
refused access to any part of the premises from which stormwater is
discharged, and the Public Works Department is able to demonstrate
probable cause to believe that there may be a violation of this article,
or that there is a need to inspect and/or sample as part of a routine
inspection and sampling program designed to verify compliance with
this article or any order issued hereunder, or to protect the overall
public health, safety, environment and welfare of the community, then
the Public Works Department may seek issuance of a special inspection
warrant per § 66.0119, Wis. Stats.[1]

The owner or operator of any activity, operation, or facility
which may cause or contribute to pollution or contamination of stormwater
shall provide, at their own expense, reasonable protection from accidental
discharge of prohibited materials or other wastes into waters of the
state or the MS4 through the use of structural and nonstructural BMPs.
Further, any person responsible for a property or premises, that is,
or may be, the source of an illicit discharge, may be required to
implement, at said person's expense, additional structural and
nonstructural BMPs to prevent the further discharge of pollutants
to waters of the state or the MS4. Compliance with all terms and conditions
of a valid permit authorizing the discharge of stormwater associated
with industrial activity or construction activity, to the maximum
extent practicable, shall be deemed compliance with the provisions
of this section.

Notwithstanding other requirements of law, as soon as any person
responsible for a facility or operation, or responsible for emergency
response for a facility or operation has information of any known
or suspected release of materials which are resulting or may result
in illicit discharges or pollutants discharging into stormwater, the
MS4, or waters of the state, said person shall take all necessary
steps to ensure the discovery, containment, and cleanup of such release,
so as to minimize the impacts of the discharge.

In the event of such a release of hazardous materials, said person
shall immediately notify emergency response agencies of the occurrence
via emergency dispatch services, and shall also notify the Public
Works Department. In the event of a release of nonhazardous materials,
said person shall notify the Public Works Department in person or
by phone or facsimile no later than the next business day. Notifications
in person or by phone shall be confirmed by written notice addressed
and mailed to the Public Works Department within three business days
of the phone notice. If the discharge of prohibited materials emanates
from a commercial or industrial establishment, the owner or operator
of such establishment shall also retain an on-site written record
of the discharge and the actions taken to prevent its recurrence.
Such records shall be retained for at least five years.

It shall be unlawful for any person to violate any provision or fail
to comply with any of the requirements of this article. Any person
who has violated or continues to violate the provisions of this article
may be subject to the enforcement actions outlined in this section
or may be restrained by injunction or otherwise abated in a manner
provided by law.

In the event the violation constitutes an immediate danger to public
health or public safety, the Public Works Department is authorized
to enter upon the subject private property, without giving prior notice,
to take any and all measures necessary to abate the violation. The
Public Works Department is authorized to seek costs of the abatement
as outlined in § 255-39.

Warning notice. When the Public Works Department finds that any person
has violated, or continues to violate, any provision of this article,
or any order issued hereunder, the Public Works Department may serve
upon that person a verbal or written warning notice specifying the
particular violation believed to have occurred and requesting the
discharger to immediately investigate the matter and to seek a resolution
whereby any offending discharge will cease. Investigation and/or resolution
of the matter in response to the warning notice in no way relieves
the alleged violator of liability for any violations occurring before
or after receipt of the warning notice. Nothing in the subsection
shall limit the authority of the Public Works Department to take action,
including emergency action or any other enforcement action without
first issuing a warning notice.

Notice of violation. Whenever the Public Works Department finds that
a person has violated a prohibition or failed to meet a requirement
of this article, the Public Works Department may order compliance
by written notice of violation to the responsible person.

A statement specifying that, should the violator fail to restore
compliance within the established time schedule, representatives of
the Public Works Department may issue a notice of intent to the responsible
party of its intent to perform work necessary to comply with this
article. The Public Works Department may go on the land and commence
the work after issuing the notice of intent. The Public Works Department
is authorized to seek costs of the abatement as outlined in § 255-39.

When the Public Works Department finds that any person has violated,
or continues to violate, any provision of this article, or any order
issued hereunder, or that the person's past violations are likely
to recur, and that the person's violation(s) has (have) caused
or contributed to an actual or threatened discharge to the MS4 or
waters of the state which reasonably appears to present an imminent
or substantial endangerment to the health or welfare of persons or
to the environment, the Public Works Department may issue an order
to the violator directing it immediately to cease and desist all such
violations and directing the violator to:

Any person notified of an emergency order directed to it under
this subsection shall immediately comply and stop or eliminate its
endangering discharge. In the event of a discharger's failure
to immediately comply voluntarily with the emergency order, the Public
Works Department may take such steps as deemed necessary to prevent
or minimize harm to the MS4 or waters of the state, and/or endangerment
to persons or to the environment, including immediate termination
of a facility's water supply, sewer connection, or other municipal
utility services. The Public Works Department may allow the person
to recommence its discharge when it has demonstrated to the satisfaction
of the Public Works Department that the period of endangerment has
passed, unless further termination proceedings are initiated against
the discharger under this article. A person that is responsible, in
whole or in part, for any discharge presenting imminent endangerment
shall submit a detailed written statement describing the causes of
the harmful discharge and the measures taken to prevent any future
occurrence to the Public Works Department within 30 days of receipt
of the prerequisite for taking any other action against the violator.

Suspension due to illicit discharges in emergency situations. The
Public Works Department may, without prior notice, suspend MS4 discharge
access to a person when such suspension is necessary to stop an actual
or threatened discharge which presents or may present imminent and
substantial danger to the environment, or to the health or welfare
of persons, or to the MS4 or waters of the state. If the violator
fails to comply with a suspension order issued in an emergency, the
Public Works Department may take such steps as deemed necessary to
prevent or minimize damage to the MS4 or waters of the state, or to
minimize danger to persons.

Any person discharging to the MS4 in violation of this article
may have their MS4 access terminated if such termination would abate
or reduce an illicit discharge. The Public Works Department will notify
a violator of the proposed termination of its MS4 access.

Any person violating any provision of this article shall be
subject to a forfeiture of not less than $25 nor more than $500 and
the costs of prosecution for each violation. Each day a violation
exists shall constitute a separate offense.

Compliance with the provisions of this article may also be enforced
by injunction in any court with jurisdiction. It shall not be necessary
to prosecute for forfeiture or a cease-and-desist order before resorting
to injunctional proceedings.

Shall hear and decide appeals where it is alleged that there is error
in any order, decision or determination made by the Public Works Department
in administering this article except for cease-and-desist orders obtained
under § 255-36D(1);

Upon appeal, may authorize variances from the provisions of this
article which are not contrary to the public interest and where owing
to special conditions a literal enforcement of the provisions of the
ordinance will result in unnecessary hardship; and

Who may appeal. Appeals to the Board of Appeals may be taken by any
aggrieved person or by any office, department, board, or bureau of
the Town of Greenville affected by any decision of the Public Works
Department.

If the violation has not been corrected pursuant to the requirements
set forth in the notice of violation, or, in the event of an appeal,
the appropriate authority upheld the decision of the Public Works
Department, then representatives of the Public Works Department may
issue a notice of intent to the responsible party of its intent to
perform work necessary to comply with this article. The Public Works
Department may go on the land and commence the work after issuing
the notice of intent. The Public Works Department is authorized to
seek costs of abatement as outlined in § 255-39. It shall
be unlawful for any person, owner, agent or person in possession of
any premises to refuse to allow the government agency or designated
contractor to enter upon the premises for the purposes set forth above.

The costs of the work performed by the Public Works Department
pursuant to this article, plus interest at the rate authorized by
the Public Works Department, shall be billed to the responsible party.
In the event a responsible party fails to pay the amount due, the
Clerk shall enter the amount due on the tax rolls and collect as a
special assessment against the property pursuant to Subch. VII of
Ch. 66, Wis. Stats.

The remedies listed in this article are not exclusive of any other
remedies available under any applicable federal, state or local law
and it is within the discretion of the Public Works Department to
seek cumulative remedies.